Question 535549
percent		----------------			quantity							
Saline I	30	----------------			x	ml						
Saline II	50	------	800	-	x	ml						
Mixture	45.00%	----------------	800									
												
30x+50(	800-x)	=45*800
												
30x+40000-50x	36000		
30x	-50x=	36000	-	40000		
-20	x=	-4000							
/	-20											
x=200	ml30.00% Saline I
600ml50.00%Saline II